anyone use aux output for O2 heater circuit?
 

so I got an Innovate WB coming and I was thinking I would supply power to heater circuit w/ an aux output via coolant temp. I do not want to damage the sensor from water/condensation and I do not want to hit a switch everytime I start car. anyone try this?

Mike

I think wideband is a bit more complex than just a heated o2 circuit. Also I don't think I'd use aux out for a relatively high power heater circuit anyway.

I'm running the techedge box in my car, i keep it hidden way up underneath the passenger side foot panel under the carpet. it gets power from the ignition if i recall correctly.

I have the innovate wb in my car. I mounted my 02 sensor about 10" after the turbo at about the 1oclock postion. My WB is just plugged into my cig lighter and is turned on right after my car actualy starts. Ive been doing this sence march, car has 6k+ miles on it sence then, sensor still works fine


If you do want it 'switched' with your wolf, id reccomend wiring it though your fuel pump relay

-Jacob

trickfc I thought that the 3 wire WB needed to be heated all the time. Jacobs suggestion of using the feed from the fuel pump relay is a good idea. I think you will find that the readings from the wB will not be as accurate without the heater running. O2 sensors cool down at idle and stop working . Using a auxport I think is a waste of a good control port but if you do want to go that way I suggest that you wire a relay and fuse the feed. There is merit in only running the heater below 1500rpm as to weather it will extend its life I don't know.
MIchael Smith

3 wire wideband? never heard of such a thing.

nyt it is a heated wideband O2 sensor they are used usually for low heat engines like stock boingers or if placement is too far from the engine. These things are rare and I have only seen one before at a speed shop. These are no replacement for true AFR exhaust monitors on a dyno but they have there place.(in boingers) These are also different to 3 wire heated narrow band O2 like are found on many cars today. In a rotary there is hardly a need to use one of these unless you are tuning coldstart mixtures to pass emissions testing. They have the advantage of being hot before you start your engine.
Michael Smith

heated o2 sensor yes, ive never seen a wideband with one signal wire, they dont function that way. if youre thinking of the lsm11 is it? the so called "Wide-range" unit.. but it is not wideband.

my wideband is an lsu4.2 and is heated.

I've read from many people that its bad to have o2 heater come on as soon as the car comes on. something about water/condensation cracking the porcelin in sensor and destroying it. the diagnostic guy at work said that o2 heater circuits pull very little power, but I'll probably use relay/fuse for the hell of it.

I dont really need the outputs for anything else, maybe water injection sometime...

Perhaps its besides the point.... but... i think its worth a look see...http://i4.photobucket.com/albums/y13...gO2Sensors.jpg